Listing calculator



1934- P. CROSMAN 1,945,927

LI STING CALCULATOR Original Filed April 28. 1932 4 Sheets-Sheet l INVENTOR Lam n 9 6/ 05 177a n ATTORNEY Jan. 30, 19340 L[ P. CROSMAN 1,945,027

LI STING CALCULATOR Original Filed April 28. 1932 4 Sheets-Sheet 2 BY W .ATTORNEY Jan. 30, 1934.

L. P. cRosMAN LISTING CALCULATOR Original Filed April 28, 1932 4 Sheets-Sheet 3 INVENTOR Jan. 30, 1934 P. cRosMAN LISTING CALCULATOR Original Filed April 28 1952 4 Sheets-Sheet 4 HNVENTOR La 712 P C/wsma I BY I Y 5 ATTORNEY Patented Jan. 30, 1934 lLllS'lllNG GALC'lILATKNlt 7 Eating Pickering (Crosman, lidaplewooril, N. 3., as signer to Gardner Company, @range, N. 31, a corporation or Delaware Original application April 23, 1332, Serial No. 633,932. Divided and this application April 15, 1933. Serial No. 636,256

3 Claims.

modifying the control of the other, serve also to control the visual distinguishing means, so that it may give the desired indication under the various registering conditions.

The invention consists in the novel construction and combination of parts, as set forth in the appended claims.

In the accompanying drawings, illustrating the invention:

Fig.- 1 is a right side elevation of a calculating mechanism, to which the invention has been applied.

Fig. 2 is a left side elevation of the plus, minus control mechanism.

Fig. 3 is a detail plan of the plus, minus control bar.

Fig. 4 is a front elevation of the ribbon shift mechanism.

Fig. 5 is a detail elevation of the same.

Fig. 6 is a diagram illustrating the ribbon shift control.

The listing register to which the invention is shown as applied is of well-known type. It will be sufficient to say that, in operation, amounts set up on the digit keyboard are accumulated in one or more registers, either additively, by engagement of a register during the upward stroke, or subtractively, by engagement thereof during the downward stroke of reciprocatory actuating segments. The extent of movement of each segment is determined by the value of the corresponding set digit key, and type bars, connected with the segments, are designed to bring type of corresponding values to the printing line. The record sheet and platen are supported in a transversely shiftable carriage, so that the accumulated values may be printed in any one of several columns, and the accumulating, printing and carriage shifting operations are performed by power means under control of suitable motor keys.

The actuating seg nents or rack arms 610 are reciprocated in the well known manner, from a rock shaft 301, having pitman connection 161 with a member 155 adapted for connection by a clutch pawl 153 with a motor driven element 157.

r An operating key 138, controls clutch pawl 153,

through latch 128 and spring pressed lever 15o,

so that holding down of the key will efiect one or more cycles of registering action.

The register 76 (Fig. 1), during an operative cycle of the machine is adapted to be moved into and out of mesh with the rack arms 610 according to the sign character of the operation, by means of cam plates 419, having connections through link 321 and arm 322 with a rocker 325, piv=- otally suppo-rtedupon shaft 304.

At the forward end of the rocker 325 is piv-- tit) ot'ally mounted, a pawl 323 and on the rear of said rocker is pivotally mounted a pawl 32%, the two pawls being connected by a spring 381, which serves to hold them yieldably in normal additive to position, with their pins 327 in engagement with control plate 326.

During the first part of the forward movement of a normal operative stroke cam 320 will engage a roller of forward pawl 323 and move rocker 325 clockwise, to disengage the normally engaged register 76 from the rack arms 610 before any movement of the rack takes place. Upon the first part of the return stroke, cam 316 will engage a roller of rear pawl 324, imparting counterclockwise movement to the rocker 325, thereby reengaging the register 76 with racks 610, said racks during their return movement acting to effect normal registrations upon the accumulator wheels.

For a reverse cycle of operation, the control plate 326 is rocked, by means of reverse operation key 139, rocker 140, arm 141 and link 142, free of the pin 32'? of forward pawl 323. A hook end 328 of said control plate, however, will now be in engagement with the forward surface of pin 327.

Upon forward movement cam 320 will now merely rock pawl 323 about its pivot point, allowing the register 76 to remain in engagement with the racks 610 during their forward movement, providing for a reverse operation upon said registers. During the first part of the return stroke cam 320, acting upon roller 352 of forward pawl 323, will move rocker 325 to disengage the register 76 prior to the return movement of racks 610.

Near the completion of a cycle of operation suitable means will engage arm 322 and restore the parts to normal position, reengaging the register 76.

Means are also-provided whereby the additive or subtractive character of the registration on accumulator 76 will be controlled by the position of the record carriage, so that in certain columns of a tabulated work sheet the items therein printed will be additively accumulated, while in other columns the items will be subtractively registered.

For this purpose a tubular bar 82 mounted in the platen carriage, is provided with a line of oriflces 81 of graded diameter, these orifices being brought successively, by transverse movements of the carriage, opposite a plunger 83. The plunger 83, mounted in the stationary frame of the machine, is urged toward bar 82, preliminarily to a registering operation, by a motor driven crank 58, link 67, rock arm 69, spring 9 1 and lever 93, said lever thereupon assuming one of three positions, according to whether the plunger encounters an unbroken surface of bar 82, or whether it enters to a greater or lesser extent into a large or a small orifice 81, respectively.

This movement of the crank 58 will also carry a roller 71 free of two cams 73, 74, pivoted upon a stationary support 110, and will bring a position-- ing tooth 98 of lever 93 into contact with said cams, to hold them, one or both, with their points above or below the path of movement of roller 71, according to the degree of movement permitted to plunger 83 and lever 93.

Cams 73 and 74 lie between lugs of a toothed I segment 105, meshing with a pinion 174 which controls the angular position of the supporting shaft of the accumulator wheels 76. As seen in Fig. 1, this supporting shaft is provided with two cams 121 and 122, lying respectively opposite two laterally and circumferentially offset portions of cam plate 419. In the position illustrated, cams 121 and 122 are both inactive, but ninety degrees counter-clockwise movement of the shaft would bring the adding cam 121 into cooperative position with the lower surface of plate 419, while two hundred and seventy degrees of counter clockwise movement of. the shaft would bring the subtracting cam 122 into position to cooperate with the upper surface of said plate. It will be obvious that the circumferential offsetting will bring the two portions of plate 419 into active position upon opposite movements of rocker 325. The illustrated position of cams 73 and 74 is the additive position, determined by a small orifice 81, whereas, if cam 74 were positioned above roller 71 due to registry of plunger 83 with a large orifice 81 (plunger 83 and lever 93 moving oppositely, due to the interposition of a whiffietree device, not shown in detail), the subtraction cam 122 would be brought to active position, by the action of roller 71 on cam 74. If cam 73 were positioned below roller 71 due to the non-registry of plunger 83 with an orifice 81, said roller would act to render both cams 121, 122 in-- active, and register 76 would not accumulate.

According to theinvention, means for printing values in blue ink when register 76 is 'oper-- ated additively or in red ink when said register is operated negatively are provided as follows:

Segment 105 (Fig. 2) is provided with an arm 302 having secured thereto an eccentric stud 303, adapted to engage the surface 304: of a cam lever 305, secured to a shaft 306, extending transversely of the machine and suitably mounted in the framing thereof. 7

A lever 307 (Fig. 1) secured to the opposite end of said shaft, has a stud 308 adapted to cooperate with a projection 309 of a lever 310, fulcrumed upon rocker 140. Such movement of lever 307 or rocker as will cause projection 309 to ride pin 308 will cause lever 310 to position the end 311 of a lever 312 (fulcrumed at 313 upon the framing of the machine and provided with a pin 314 engaging surface 315 of lever 310) to operative or inoperative position relative to the projection 316 of a slide 317.

Slide 317 is secured by pin and slot engagement 318 (Fig. 4) to'brackets 319, secured to the rear frame of the machine, and is tensioned toward the right (as viewed in Fig. 4) by means of spring 320.

A bell crank lever 321 fulcrumed at 322 upon bracket 319, has one arm adapted to engage a projection 324 of slide 317 and its other arm in engagement with the bifurcated end 323' of a lever 34.4 (Fig. 5) fulcrumed at 325 upon bracket 319. An arm 326 of lever 344 has engagement with a pin 327 fixed an arm 323 fast to the shaft 164, and as said shaft is. rocked during an operative cycle of the machine, pin 327-"- will fall away from arm 326 of lever 344.

If end 311 of lever 312 (Fig. 1) is in raised position, the projection 316 of slide 317 will contact with said end and slide 317 will be held toward the left, in the position illustrated in Fig. 4, and the type ribbon (supported from slide 317) will be in lowered position, with the blue portion 323 thereof opposite the printing line. However, if projection .309 is positioned above pin 308 the end 311 of lever 312 will be in its lower position, and the indenture 348 of said lever will be opposite projection 313 of slide 317, whereupon said slide will be free to move toward the right, under influence of the spring 320 Fixed in slide 317 are pins 329 and 330, having engagement with the walls of angularly disposed slots 331 and 332 of a frame 333, provided with hairpin type ribbon guide members 334. As slide 317 is moved toward the right, pins 329 and 330 will earn frame 333 upwardly to raise the type ribbon, bringing the lower or red ink portion 335 thereof to the printing line.

Pin 308 (Fig. 1) is adapted to be moved by the segment 105 to either of three positions, corresponding to the non-add, add or subtract positions of said segment. The projection 309 of lever 310 is adapted to be moved forward or rearward of its normal position by operation of rocker 140, whereby said lever will be displaced rearwardly when minus key 139 is depressed and forwardly upon operation of the known non-add key, which controls non-add operations through reverse rotation of rocker 140 and am 141, acting upon pawl 324 of rocker 325.

As diagrammatically illustrated in Fig. 6, projection 309 is only positioned upon the pin 308 at such times as the registers are to be operated negatively.

Upon completion of an operating cycle of the machine, shaft 164 will rock arm 328 upwardly, pin 327 will rock lever 344, bell crank 321 will contact projection 324 of slide 317, restoring said slide to normal position, and pins 329 and 330 will cam frame 333 to normal position, restoring the blue inked portion 323 of the type ribbon to the printing line.

I claim:

1. In a listing calculator having a register, means for selectively determining the normal sign character of a registration thereon, means for reversing said normal sign character, recording means and means for visually distinguishing records of different character; a member settable by the sign determining means, a member settable by the reversing means and means controlled by said members to set the record distinguishing means in accordance with the position of both members.

eat er and a member operable by said control members in either of two relatively shifted positions thereoi to change the normal setting of the dis thiguishing means.

3. In a listing calculator having a register, means for selectively determining the normal sign character of a registration thereon, means for reversing said normal sign character, recording means including a two-=color ink ribbon and a guide adapted to hold said ribbon with one or the other color at the printing line; a control mem= ber settable by the sign determining means, a control member settalole by the reversing means, a member normally holding the ribbon. guide in a given position, and means controlled by the rela tive setting of the control members to set the ribbon guide to its second given position.

LQRTLNG: PICKERING CROSMAN.

Mill 

